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Finding the Fourth Proportional to 480,108.61, 720,411.59 and 214,060.87

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Solution

The fourth proportional to 480,108.61, 720,411.59 and 214,060.87 is: 321,202.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,108.61 : 720,411.59 = 214,060.87 : x
  2. Step 2: Convert to fraction form
    480,108.61/720,411.59 = 214,060.87/x
  3. Step 3: Cross multiply
    480,108.61x = 720,411.59 × 214,060.87
  4. Step 4: Simplify right side
    480,108.61x = 154,211,931,713.48
  5. Step 5: Solve for x
    x = 154,211,931,713.48/480,108.61
  6. Step 6: Final answer
    x = 321,202.18

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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.