Home / 347,345.20-521,017.80-147,672.10

Finding the Fourth Proportional to 347,345.20, 521,017.80 and 147,672.10

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Solution

The fourth proportional to 347,345.20, 521,017.80 and 147,672.10 is: 221,508.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,345.20 : 521,017.80 = 147,672.10 : x
  2. Step 2: Convert to fraction form
    347,345.20/521,017.80 = 147,672.10/x
  3. Step 3: Cross multiply
    347,345.20x = 521,017.80 × 147,672.10
  4. Step 4: Simplify right side
    347,345.20x = 76,939,792,663.38
  5. Step 5: Solve for x
    x = 76,939,792,663.38/347,345.20
  6. Step 6: Final answer
    x = 221,508.15

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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.