Home / 355,149.12-490,521.84-282,794.24

Finding the Fourth Proportional to 355,149.12, 490,521.84 and 282,794.24

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Solution

The fourth proportional to 355,149.12, 490,521.84 and 282,794.24 is: 390,587.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,149.12 : 490,521.84 = 282,794.24 : x
  2. Step 2: Convert to fraction form
    355,149.12/490,521.84 = 282,794.24/x
  3. Step 3: Cross multiply
    355,149.12x = 490,521.84 × 282,794.24
  4. Step 4: Simplify right side
    355,149.12x = 138,716,750,946.20
  5. Step 5: Solve for x
    x = 138,716,750,946.20/355,149.12
  6. Step 6: Final answer
    x = 390,587.34

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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.