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Finding the Fourth Proportional to 280,008.19, 420,011.49 and 69,646.13

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Solution

The fourth proportional to 280,008.19, 420,011.49 and 69,646.13 is: 104,469.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,008.19 : 420,011.49 = 69,646.13 : x
  2. Step 2: Convert to fraction form
    280,008.19/420,011.49 = 69,646.13/x
  3. Step 3: Cross multiply
    280,008.19x = 420,011.49 × 69,646.13
  4. Step 4: Simplify right side
    280,008.19x = 29,252,174,834.03
  5. Step 5: Solve for x
    x = 29,252,174,834.03/280,008.19
  6. Step 6: Final answer
    x = 104,469.00

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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.