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Finding the Fourth Proportional to 356,627.40, 534,941.10 and 286,643.40

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Solution

The fourth proportional to 356,627.40, 534,941.10 and 286,643.40 is: 429,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,627.40 : 534,941.10 = 286,643.40 : x
  2. Step 2: Convert to fraction form
    356,627.40/534,941.10 = 286,643.40/x
  3. Step 3: Cross multiply
    356,627.40x = 534,941.10 × 286,643.40
  4. Step 4: Simplify right side
    356,627.40x = 153,337,335,703.74
  5. Step 5: Solve for x
    x = 153,337,335,703.74/356,627.40
  6. Step 6: Final answer
    x = 429,965.10

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Similar ratio
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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.