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Finding the Fourth Proportional to 210,870.54, 291,001.01 and 115,377.62

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Solution

The fourth proportional to 210,870.54, 291,001.01 and 115,377.62 is: 159,220.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,870.54 : 291,001.01 = 115,377.62 : x
  2. Step 2: Convert to fraction form
    210,870.54/291,001.01 = 115,377.62/x
  3. Step 3: Cross multiply
    210,870.54x = 291,001.01 × 115,377.62
  4. Step 4: Simplify right side
    210,870.54x = 33,575,001,919.50
  5. Step 5: Solve for x
    x = 33,575,001,919.50/210,870.54
  6. Step 6: Final answer
    x = 159,220.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.