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Finding the Fourth Proportional to 478,569.16, 717,867.66 and 178,992.58

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Solution

The fourth proportional to 478,569.16, 717,867.66 and 178,992.58 is: 268,494.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,569.16 : 717,867.66 = 178,992.58 : x
  2. Step 2: Convert to fraction form
    478,569.16/717,867.66 = 178,992.58/x
  3. Step 3: Cross multiply
    478,569.16x = 717,867.66 × 178,992.58
  4. Step 4: Simplify right side
    478,569.16x = 128,492,984,561.96
  5. Step 5: Solve for x
    x = 128,492,984,561.96/478,569.16
  6. Step 6: Final answer
    x = 268,494.08

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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.