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Finding the Fourth Proportional to 478,510.32, 717,859.84 and 136,956.96

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Solution

The fourth proportional to 478,510.32, 717,859.84 and 136,956.96 is: 205,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,510.32 : 717,859.84 = 136,956.96 : x
  2. Step 2: Convert to fraction form
    478,510.32/717,859.84 = 136,956.96/x
  3. Step 3: Cross multiply
    478,510.32x = 717,859.84 × 136,956.96
  4. Step 4: Simplify right side
    478,510.32x = 98,315,901,392.49
  5. Step 5: Solve for x
    x = 98,315,901,392.49/478,510.32
  6. Step 6: Final answer
    x = 205,462.45

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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.