Home / 280,475.80-387,058.04-153,151.40

Finding the Fourth Proportional to 280,475.80, 387,058.04 and 153,151.40

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Solution

The fourth proportional to 280,475.80, 387,058.04 and 153,151.40 is: 211,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,475.80 : 387,058.04 = 153,151.40 : x
  2. Step 2: Convert to fraction form
    280,475.80/387,058.04 = 153,151.40/x
  3. Step 3: Cross multiply
    280,475.80x = 387,058.04 × 153,151.40
  4. Step 4: Simplify right side
    280,475.80x = 59,278,480,707.26
  5. Step 5: Solve for x
    x = 59,278,480,707.26/280,475.80
  6. Step 6: Final answer
    x = 211,349.72

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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.