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Finding the Fourth Proportional to 459,981.78, 634,774.88 and 256,028.31

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Solution

The fourth proportional to 459,981.78, 634,774.88 and 256,028.31 is: 353,319.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,981.78 : 634,774.88 = 256,028.31 : x
  2. Step 2: Convert to fraction form
    459,981.78/634,774.88 = 256,028.31/x
  3. Step 3: Cross multiply
    459,981.78x = 634,774.88 × 256,028.31
  4. Step 4: Simplify right side
    459,981.78x = 162,520,336,582.98
  5. Step 5: Solve for x
    x = 162,520,336,582.98/459,981.78
  6. Step 6: Final answer
    x = 353,319.08

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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.