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Finding the Fourth Proportional to 292,000.60, 438,000.90 and 255,842.20

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Solution

The fourth proportional to 292,000.60, 438,000.90 and 255,842.20 is: 383,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,000.60 : 438,000.90 = 255,842.20 : x
  2. Step 2: Convert to fraction form
    292,000.60/438,000.90 = 255,842.20/x
  3. Step 3: Cross multiply
    292,000.60x = 438,000.90 × 255,842.20
  4. Step 4: Simplify right side
    292,000.60x = 112,059,113,857.98
  5. Step 5: Solve for x
    x = 112,059,113,857.98/292,000.60
  6. Step 6: Final answer
    x = 383,763.30

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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.