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Finding the Fourth Proportional to 292,425.40, 438,679.95 and 90,038.63

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Solution

The fourth proportional to 292,425.40, 438,679.95 and 90,038.63 is: 135,070.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,425.40 : 438,679.95 = 90,038.63 : x
  2. Step 2: Convert to fraction form
    292,425.40/438,679.95 = 90,038.63/x
  3. Step 3: Cross multiply
    292,425.40x = 438,679.95 × 90,038.63
  4. Step 4: Simplify right side
    292,425.40x = 39,498,141,256.28
  5. Step 5: Solve for x
    x = 39,498,141,256.28/292,425.40
  6. Step 6: Final answer
    x = 135,070.83

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1.5x scale

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.