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Finding the Fourth Proportional to 502,405.40, 753,389.40 and 165,315.80

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Solution

The fourth proportional to 502,405.40, 753,389.40 and 165,315.80 is: 247,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,405.40 : 753,389.40 = 165,315.80 : x
  2. Step 2: Convert to fraction form
    502,405.40/753,389.40 = 165,315.80/x
  3. Step 3: Cross multiply
    502,405.40x = 753,389.40 × 165,315.80
  4. Step 4: Simplify right side
    502,405.40x = 124,547,171,372.52
  5. Step 5: Solve for x
    x = 124,547,171,372.52/502,405.40
  6. Step 6: Final answer
    x = 247,901.74

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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.