Home / 514,285.20-771,427.80-140,308.20

Finding the Fourth Proportional to 514,285.20, 771,427.80 and 140,308.20

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Solution

The fourth proportional to 514,285.20, 771,427.80 and 140,308.20 is: 210,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,285.20 : 771,427.80 = 140,308.20 : x
  2. Step 2: Convert to fraction form
    514,285.20/771,427.80 = 140,308.20/x
  3. Step 3: Cross multiply
    514,285.20x = 771,427.80 × 140,308.20
  4. Step 4: Simplify right side
    514,285.20x = 108,237,646,047.96
  5. Step 5: Solve for x
    x = 108,237,646,047.96/514,285.20
  6. Step 6: Final answer
    x = 210,462.30

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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.