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Finding the Fourth Proportional to 286,566.40, 429,853.20 and 86,888.80

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Solution

The fourth proportional to 286,566.40, 429,853.20 and 86,888.80 is: 130,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,566.40 : 429,853.20 = 86,888.80 : x
  2. Step 2: Convert to fraction form
    286,566.40/429,853.20 = 86,888.80/x
  3. Step 3: Cross multiply
    286,566.40x = 429,853.20 × 86,888.80
  4. Step 4: Simplify right side
    286,566.40x = 37,349,428,724.16
  5. Step 5: Solve for x
    x = 37,349,428,724.16/286,566.40
  6. Step 6: Final answer
    x = 130,334.29

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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.