Home / 282,580.20-390,063.20-187,117.65

Finding the Fourth Proportional to 282,580.20, 390,063.20 and 187,117.65

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Solution

The fourth proportional to 282,580.20, 390,063.20 and 187,117.65 is: 258,290.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,580.20 : 390,063.20 = 187,117.65 : x
  2. Step 2: Convert to fraction form
    282,580.20/390,063.20 = 187,117.65/x
  3. Step 3: Cross multiply
    282,580.20x = 390,063.20 × 187,117.65
  4. Step 4: Simplify right side
    282,580.20x = 72,987,708,399.89
  5. Step 5: Solve for x
    x = 72,987,708,399.89/282,580.20
  6. Step 6: Final answer
    x = 258,290.24

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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.