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Finding the Fourth Proportional to 553,352.40, 829,915.20 and 153,892.80

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Solution

The fourth proportional to 553,352.40, 829,915.20 and 153,892.80 is: 230,807.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,352.40 : 829,915.20 = 153,892.80 : x
  2. Step 2: Convert to fraction form
    553,352.40/829,915.20 = 153,892.80/x
  3. Step 3: Cross multiply
    553,352.40x = 829,915.20 × 153,892.80
  4. Step 4: Simplify right side
    553,352.40x = 127,717,973,890.56
  5. Step 5: Solve for x
    x = 127,717,973,890.56/553,352.40
  6. Step 6: Final answer
    x = 230,807.66

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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.