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Finding the Fourth Proportional to 356,423.60, 534,376.20 and 145,953.20

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Solution

The fourth proportional to 356,423.60, 534,376.20 and 145,953.20 is: 218,823.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,423.60 : 534,376.20 = 145,953.20 : x
  2. Step 2: Convert to fraction form
    356,423.60/534,376.20 = 145,953.20/x
  3. Step 3: Cross multiply
    356,423.60x = 534,376.20 × 145,953.20
  4. Step 4: Simplify right side
    356,423.60x = 77,993,916,393.84
  5. Step 5: Solve for x
    x = 77,993,916,393.84/356,423.60
  6. Step 6: Final answer
    x = 218,823.66

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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.