Home / 280,927.89-387,680.43-153,603.45

Finding the Fourth Proportional to 280,927.89, 387,680.43 and 153,603.45

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Solution

The fourth proportional to 280,927.89, 387,680.43 and 153,603.45 is: 211,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,927.89 : 387,680.43 = 153,603.45 : x
  2. Step 2: Convert to fraction form
    280,927.89/387,680.43 = 153,603.45/x
  3. Step 3: Cross multiply
    280,927.89x = 387,680.43 × 153,603.45
  4. Step 4: Simplify right side
    280,927.89x = 59,549,051,545.48
  5. Step 5: Solve for x
    x = 59,549,051,545.48/280,927.89
  6. Step 6: Final answer
    x = 211,972.73

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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.