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Finding the Fourth Proportional to 478,465.32, 717,792.29 and 136,911.96

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Solution

The fourth proportional to 478,465.32, 717,792.29 and 136,911.96 is: 205,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,465.32 : 717,792.29 = 136,911.96 : x
  2. Step 2: Convert to fraction form
    478,465.32/717,792.29 = 136,911.96/x
  3. Step 3: Cross multiply
    478,465.32x = 717,792.29 × 136,911.96
  4. Step 4: Simplify right side
    478,465.32x = 98,274,349,639.07
  5. Step 5: Solve for x
    x = 98,274,349,639.07/478,465.32
  6. Step 6: Final answer
    x = 205,394.93

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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.