Home / 280,535.04-387,123.36-153,185.76

Finding the Fourth Proportional to 280,535.04, 387,123.36 and 153,185.76

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Solution

The fourth proportional to 280,535.04, 387,123.36 and 153,185.76 is: 211,388.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,535.04 : 387,123.36 = 153,185.76 : x
  2. Step 2: Convert to fraction form
    280,535.04/387,123.36 = 153,185.76/x
  3. Step 3: Cross multiply
    280,535.04x = 387,123.36 × 153,185.76
  4. Step 4: Simplify right side
    280,535.04x = 59,301,786,115.35
  5. Step 5: Solve for x
    x = 59,301,786,115.35/280,535.04
  6. Step 6: Final answer
    x = 211,388.16

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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.