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Finding the Fourth Proportional to 257,671.12, 355,406.28 and 249,000.88

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Solution

The fourth proportional to 257,671.12, 355,406.28 and 249,000.88 is: 343,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,671.12 : 355,406.28 = 249,000.88 : x
  2. Step 2: Convert to fraction form
    257,671.12/355,406.28 = 249,000.88/x
  3. Step 3: Cross multiply
    257,671.12x = 355,406.28 × 249,000.88
  4. Step 4: Simplify right side
    257,671.12x = 88,496,476,477.53
  5. Step 5: Solve for x
    x = 88,496,476,477.53/257,671.12
  6. Step 6: Final answer
    x = 343,447.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.