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Finding the Fourth Proportional to 425,416.12, 637,283.60 and 256,437.60

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Solution

The fourth proportional to 425,416.12, 637,283.60 and 256,437.60 is: 384,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,416.12 : 637,283.60 = 256,437.60 : x
  2. Step 2: Convert to fraction form
    425,416.12/637,283.60 = 256,437.60/x
  3. Step 3: Cross multiply
    425,416.12x = 637,283.60 × 256,437.60
  4. Step 4: Simplify right side
    425,416.12x = 163,423,476,903.36
  5. Step 5: Solve for x
    x = 163,423,476,903.36/425,416.12
  6. Step 6: Final answer
    x = 384,149.70

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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.