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Finding the Fourth Proportional to 456,509.30, 684,763.95 and 156,963.20

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Solution

The fourth proportional to 456,509.30, 684,763.95 and 156,963.20 is: 235,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,509.30 : 684,763.95 = 156,963.20 : x
  2. Step 2: Convert to fraction form
    456,509.30/684,763.95 = 156,963.20/x
  3. Step 3: Cross multiply
    456,509.30x = 684,763.95 × 156,963.20
  4. Step 4: Simplify right side
    456,509.30x = 107,482,740,836.64
  5. Step 5: Solve for x
    x = 107,482,740,836.64/456,509.30
  6. Step 6: Final answer
    x = 235,444.80

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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.