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Finding the Fourth Proportional to 347,014.92, 478,689.30 and 239,641.32

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Solution

The fourth proportional to 347,014.92, 478,689.30 and 239,641.32 is: 330,572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,014.92 : 478,689.30 = 239,641.32 : x
  2. Step 2: Convert to fraction form
    347,014.92/478,689.30 = 239,641.32/x
  3. Step 3: Cross multiply
    347,014.92x = 478,689.30 × 239,641.32
  4. Step 4: Simplify right side
    347,014.92x = 114,713,735,721.88
  5. Step 5: Solve for x
    x = 114,713,735,721.88/347,014.92
  6. Step 6: Final answer
    x = 330,572.92

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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.