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Finding the Fourth Proportional to 319,191.89, 478,902.15 and 136,746.14

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Solution

The fourth proportional to 319,191.89, 478,902.15 and 136,746.14 is: 205,168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,191.89 : 478,902.15 = 136,746.14 : x
  2. Step 2: Convert to fraction form
    319,191.89/478,902.15 = 136,746.14/x
  3. Step 3: Cross multiply
    319,191.89x = 478,902.15 × 136,746.14
  4. Step 4: Simplify right side
    319,191.89x = 65,488,018,055.69
  5. Step 5: Solve for x
    x = 65,488,018,055.69/319,191.89
  6. Step 6: Final answer
    x = 205,168.18

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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.