Home / 280,624.32-387,270.09-153,308.16

Finding the Fourth Proportional to 280,624.32, 387,270.09 and 153,308.16

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Solution

The fourth proportional to 280,624.32, 387,270.09 and 153,308.16 is: 211,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,624.32 : 387,270.09 = 153,308.16 : x
  2. Step 2: Convert to fraction form
    280,624.32/387,270.09 = 153,308.16/x
  3. Step 3: Cross multiply
    280,624.32x = 387,270.09 × 153,308.16
  4. Step 4: Simplify right side
    280,624.32x = 59,371,664,920.93
  5. Step 5: Solve for x
    x = 59,371,664,920.93/280,624.32
  6. Step 6: Final answer
    x = 211,569.92

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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.