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Finding the Fourth Proportional to 292,284.60, 438,426.90 and 192,557.40

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Solution

The fourth proportional to 292,284.60, 438,426.90 and 192,557.40 is: 288,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,284.60 : 438,426.90 = 192,557.40 : x
  2. Step 2: Convert to fraction form
    292,284.60/438,426.90 = 192,557.40/x
  3. Step 3: Cross multiply
    292,284.60x = 438,426.90 × 192,557.40
  4. Step 4: Simplify right side
    292,284.60x = 84,422,343,954.06
  5. Step 5: Solve for x
    x = 84,422,343,954.06/292,284.60
  6. Step 6: Final answer
    x = 288,836.10

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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.