Home / 280,666.24-387,324.48-153,347.20

Finding the Fourth Proportional to 280,666.24, 387,324.48 and 153,347.20

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Solution

The fourth proportional to 280,666.24, 387,324.48 and 153,347.20 is: 211,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,666.24 : 387,324.48 = 153,347.20 : x
  2. Step 2: Convert to fraction form
    280,666.24/387,324.48 = 153,347.20/x
  3. Step 3: Cross multiply
    280,666.24x = 387,324.48 × 153,347.20
  4. Step 4: Simplify right side
    280,666.24x = 59,395,124,499.46
  5. Step 5: Solve for x
    x = 59,395,124,499.46/280,666.24
  6. Step 6: Final answer
    x = 211,621.91

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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.