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Finding the Fourth Proportional to 286,284.20, 429,426.30 and 260,040.20

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Solution

The fourth proportional to 286,284.20, 429,426.30 and 260,040.20 is: 390,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,284.20 : 429,426.30 = 260,040.20 : x
  2. Step 2: Convert to fraction form
    286,284.20/429,426.30 = 260,040.20/x
  3. Step 3: Cross multiply
    286,284.20x = 429,426.30 × 260,040.20
  4. Step 4: Simplify right side
    286,284.20x = 111,668,100,937.26
  5. Step 5: Solve for x
    x = 111,668,100,937.26/286,284.20
  6. Step 6: Final answer
    x = 390,060.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.