Home / 317,707.13-438,437.03-172,513.10

Finding the Fourth Proportional to 317,707.13, 438,437.03 and 172,513.10

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Solution

The fourth proportional to 317,707.13, 438,437.03 and 172,513.10 is: 238,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,707.13 : 438,437.03 = 172,513.10 : x
  2. Step 2: Convert to fraction form
    317,707.13/438,437.03 = 172,513.10/x
  3. Step 3: Cross multiply
    317,707.13x = 438,437.03 × 172,513.10
  4. Step 4: Simplify right side
    317,707.13x = 75,636,128,145.34
  5. Step 5: Solve for x
    x = 75,636,128,145.34/317,707.13
  6. Step 6: Final answer
    x = 238,068.72

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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.