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Finding the Fourth Proportional to 553,385.40, 830,466.90 and 238,068.60

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Solution

The fourth proportional to 553,385.40, 830,466.90 and 238,068.60 is: 357,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,385.40 : 830,466.90 = 238,068.60 : x
  2. Step 2: Convert to fraction form
    553,385.40/830,466.90 = 238,068.60/x
  3. Step 3: Cross multiply
    553,385.40x = 830,466.90 × 238,068.60
  4. Step 4: Simplify right side
    553,385.40x = 197,708,092,229.34
  5. Step 5: Solve for x
    x = 197,708,092,229.34/553,385.40
  6. Step 6: Final answer
    x = 357,270.16

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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.