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Finding the Fourth Proportional to 286,348.80, 429,523.20 and 240,038.40

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Solution

The fourth proportional to 286,348.80, 429,523.20 and 240,038.40 is: 360,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,348.80 : 429,523.20 = 240,038.40 : x
  2. Step 2: Convert to fraction form
    286,348.80/429,523.20 = 240,038.40/x
  3. Step 3: Cross multiply
    286,348.80x = 429,523.20 × 240,038.40
  4. Step 4: Simplify right side
    286,348.80x = 103,102,061,690.88
  5. Step 5: Solve for x
    x = 103,102,061,690.88/286,348.80
  6. Step 6: Final answer
    x = 360,057.60

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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.