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Finding the Fourth Proportional to 280,395.90, 386,947.08 and 153,073.62

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Solution

The fourth proportional to 280,395.90, 386,947.08 and 153,073.62 is: 211,242.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,395.90 : 386,947.08 = 153,073.62 : x
  2. Step 2: Convert to fraction form
    280,395.90/386,947.08 = 153,073.62/x
  3. Step 3: Cross multiply
    280,395.90x = 386,947.08 × 153,073.62
  4. Step 4: Simplify right side
    280,395.90x = 59,231,390,284.03
  5. Step 5: Solve for x
    x = 59,231,390,284.03/280,395.90
  6. Step 6: Final answer
    x = 211,242.00

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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.