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Finding the Fourth Proportional to 501,030.20, 751,545.30 and 127,053.20

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Solution

The fourth proportional to 501,030.20, 751,545.30 and 127,053.20 is: 190,579.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,030.20 : 751,545.30 = 127,053.20 : x
  2. Step 2: Convert to fraction form
    501,030.20/751,545.30 = 127,053.20/x
  3. Step 3: Cross multiply
    501,030.20x = 751,545.30 × 127,053.20
  4. Step 4: Simplify right side
    501,030.20x = 95,486,235,309.96
  5. Step 5: Solve for x
    x = 95,486,235,309.96/501,030.20
  6. Step 6: Final answer
    x = 190,579.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.