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Finding the Fourth Proportional to 459,473.76, 634,074.15 and 255,520.20

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Solution

The fourth proportional to 459,473.76, 634,074.15 and 255,520.20 is: 352,618.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,473.76 : 634,074.15 = 255,520.20 : x
  2. Step 2: Convert to fraction form
    459,473.76/634,074.15 = 255,520.20/x
  3. Step 3: Cross multiply
    459,473.76x = 634,074.15 × 255,520.20
  4. Step 4: Simplify right side
    459,473.76x = 162,018,753,622.83
  5. Step 5: Solve for x
    x = 162,018,753,622.83/459,473.76
  6. Step 6: Final answer
    x = 352,618.08

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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.