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Finding the Fourth Proportional to 553,555.20, 830,527.20 and 238,108.80

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Solution

The fourth proportional to 553,555.20, 830,527.20 and 238,108.80 is: 357,246.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,555.20 : 830,527.20 = 238,108.80 : x
  2. Step 2: Convert to fraction form
    553,555.20/830,527.20 = 238,108.80/x
  3. Step 3: Cross multiply
    553,555.20x = 830,527.20 × 238,108.80
  4. Step 4: Simplify right side
    553,555.20x = 197,755,834,959.36
  5. Step 5: Solve for x
    x = 197,755,834,959.36/553,555.20
  6. Step 6: Final answer
    x = 357,246.82

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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.