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Finding the Fourth Proportional to 292,807.20, 439,210.80 and 290,733.60

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Solution

The fourth proportional to 292,807.20, 439,210.80 and 290,733.60 is: 436,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,807.20 : 439,210.80 = 290,733.60 : x
  2. Step 2: Convert to fraction form
    292,807.20/439,210.80 = 290,733.60/x
  3. Step 3: Cross multiply
    292,807.20x = 439,210.80 × 290,733.60
  4. Step 4: Simplify right side
    292,807.20x = 127,693,337,042.88
  5. Step 5: Solve for x
    x = 127,693,337,042.88/292,807.20
  6. Step 6: Final answer
    x = 436,100.40

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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.