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Finding the Fourth Proportional to 402,695.60, 604,043.40 and 122,212.40

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Solution

The fourth proportional to 402,695.60, 604,043.40 and 122,212.40 is: 183,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,695.60 : 604,043.40 = 122,212.40 : x
  2. Step 2: Convert to fraction form
    402,695.60/604,043.40 = 122,212.40/x
  3. Step 3: Cross multiply
    402,695.60x = 604,043.40 × 122,212.40
  4. Step 4: Simplify right side
    402,695.60x = 73,821,593,618.16
  5. Step 5: Solve for x
    x = 73,821,593,618.16/402,695.60
  6. Step 6: Final answer
    x = 183,318.60

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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.