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Finding the Fourth Proportional to 292,487.63, 438,675.95 and 142,577.15

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Solution

The fourth proportional to 292,487.63, 438,675.95 and 142,577.15 is: 213,838.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,487.63 : 438,675.95 = 142,577.15 : x
  2. Step 2: Convert to fraction form
    292,487.63/438,675.95 = 142,577.15/x
  3. Step 3: Cross multiply
    292,487.63x = 438,675.95 × 142,577.15
  4. Step 4: Simplify right side
    292,487.63x = 62,545,164,887.61
  5. Step 5: Solve for x
    x = 62,545,164,887.61/292,487.63
  6. Step 6: Final answer
    x = 213,838.67

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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.