Home / 425,629.02-638,631.60-223,176.78

Finding the Fourth Proportional to 425,629.02, 638,631.60 and 223,176.78

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Solution

The fourth proportional to 425,629.02, 638,631.60 and 223,176.78 is: 334,863.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,629.02 : 638,631.60 = 223,176.78 : x
  2. Step 2: Convert to fraction form
    425,629.02/638,631.60 = 223,176.78/x
  3. Step 3: Cross multiply
    425,629.02x = 638,631.60 × 223,176.78
  4. Step 4: Simplify right side
    425,629.02x = 142,527,744,094.25
  5. Step 5: Solve for x
    x = 142,527,744,094.25/425,629.02
  6. Step 6: Final answer
    x = 334,863.78

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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.