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Finding the Fourth Proportional to 508,710.30, 763,065.45 and 153,779.10

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Solution

The fourth proportional to 508,710.30, 763,065.45 and 153,779.10 is: 230,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,710.30 : 763,065.45 = 153,779.10 : x
  2. Step 2: Convert to fraction form
    508,710.30/763,065.45 = 153,779.10/x
  3. Step 3: Cross multiply
    508,710.30x = 763,065.45 × 153,779.10
  4. Step 4: Simplify right side
    508,710.30x = 117,343,518,142.10
  5. Step 5: Solve for x
    x = 117,343,518,142.10/508,710.30
  6. Step 6: Final answer
    x = 230,668.65

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Similar ratio
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1.5x scale

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.