Home / 280,784.13-387,482.12-153,459.73

Finding the Fourth Proportional to 280,784.13, 387,482.12 and 153,459.73

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Solution

The fourth proportional to 280,784.13, 387,482.12 and 153,459.73 is: 211,774.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,784.13 : 387,482.12 = 153,459.73 : x
  2. Step 2: Convert to fraction form
    280,784.13/387,482.12 = 153,459.73/x
  3. Step 3: Cross multiply
    280,784.13x = 387,482.12 × 153,459.73
  4. Step 4: Simplify right side
    280,784.13x = 59,462,900,747.73
  5. Step 5: Solve for x
    x = 59,462,900,747.73/280,784.13
  6. Step 6: Final answer
    x = 211,774.43

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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.