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Finding the Fourth Proportional to 353,663.04, 530,442.24 and 128,970.72

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Solution

The fourth proportional to 353,663.04, 530,442.24 and 128,970.72 is: 193,437.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,663.04 : 530,442.24 = 128,970.72 : x
  2. Step 2: Convert to fraction form
    353,663.04/530,442.24 = 128,970.72/x
  3. Step 3: Cross multiply
    353,663.04x = 530,442.24 × 128,970.72
  4. Step 4: Simplify right side
    353,663.04x = 68,411,517,611.21
  5. Step 5: Solve for x
    x = 68,411,517,611.21/353,663.04
  6. Step 6: Final answer
    x = 193,437.00

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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.