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Finding the Fourth Proportional to 315,259.02, 435,045.78 and 172,016.10

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Solution

The fourth proportional to 315,259.02, 435,045.78 and 172,016.10 is: 237,375.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,259.02 : 435,045.78 = 172,016.10 : x
  2. Step 2: Convert to fraction form
    315,259.02/435,045.78 = 172,016.10/x
  3. Step 3: Cross multiply
    315,259.02x = 435,045.78 × 172,016.10
  4. Step 4: Simplify right side
    315,259.02x = 74,834,878,397.06
  5. Step 5: Solve for x
    x = 74,834,878,397.06/315,259.02
  6. Step 6: Final answer
    x = 237,375.85

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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.