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Finding the Fourth Proportional to 315,627.71, 473,442.84 and 78,969.74

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Solution

The fourth proportional to 315,627.71, 473,442.84 and 78,969.74 is: 118,454.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,627.71 : 473,442.84 = 78,969.74 : x
  2. Step 2: Convert to fraction form
    315,627.71/473,442.84 = 78,969.74/x
  3. Step 3: Cross multiply
    315,627.71x = 473,442.84 × 78,969.74
  4. Step 4: Simplify right side
    315,627.71x = 37,387,655,612.45
  5. Step 5: Solve for x
    x = 37,387,655,612.45/315,627.71
  6. Step 6: Final answer
    x = 118,454.92

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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.