Home / 390,767.03-539,287.47-218,702.24

Finding the Fourth Proportional to 390,767.03, 539,287.47 and 218,702.24

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Solution

The fourth proportional to 390,767.03, 539,287.47 and 218,702.24 is: 301,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,767.03 : 539,287.47 = 218,702.24 : x
  2. Step 2: Convert to fraction form
    390,767.03/539,287.47 = 218,702.24/x
  3. Step 3: Cross multiply
    390,767.03x = 539,287.47 × 218,702.24
  4. Step 4: Simplify right side
    390,767.03x = 117,943,377,692.93
  5. Step 5: Solve for x
    x = 117,943,377,692.93/390,767.03
  6. Step 6: Final answer
    x = 301,825.30

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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.