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Finding the Fourth Proportional to 402,003.60, 602,130.60 and 349,515.60

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Solution

The fourth proportional to 402,003.60, 602,130.60 and 349,515.60 is: 523,512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,003.60 : 602,130.60 = 349,515.60 : x
  2. Step 2: Convert to fraction form
    402,003.60/602,130.60 = 349,515.60/x
  3. Step 3: Cross multiply
    402,003.60x = 602,130.60 × 349,515.60
  4. Step 4: Simplify right side
    402,003.60x = 210,454,037,937.36
  5. Step 5: Solve for x
    x = 210,454,037,937.36/402,003.60
  6. Step 6: Final answer
    x = 523,512.82

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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.