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Finding the Fourth Proportional to 316,779.10, 475,119.12 and 103,545.40

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Solution

The fourth proportional to 316,779.10, 475,119.12 and 103,545.40 is: 155,301.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,779.10 : 475,119.12 = 103,545.40 : x
  2. Step 2: Convert to fraction form
    316,779.10/475,119.12 = 103,545.40/x
  3. Step 3: Cross multiply
    316,779.10x = 475,119.12 × 103,545.40
  4. Step 4: Simplify right side
    316,779.10x = 49,196,399,328.05
  5. Step 5: Solve for x
    x = 49,196,399,328.05/316,779.10
  6. Step 6: Final answer
    x = 155,301.91

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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.