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Finding the Fourth Proportional to 384,915.20, 577,065.60 and 163,116.80

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Solution

The fourth proportional to 384,915.20, 577,065.60 and 163,116.80 is: 244,545.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,915.20 : 577,065.60 = 163,116.80 : x
  2. Step 2: Convert to fraction form
    384,915.20/577,065.60 = 163,116.80/x
  3. Step 3: Cross multiply
    384,915.20x = 577,065.60 × 163,116.80
  4. Step 4: Simplify right side
    384,915.20x = 94,129,094,062.08
  5. Step 5: Solve for x
    x = 94,129,094,062.08/384,915.20
  6. Step 6: Final answer
    x = 244,545.02

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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.