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Finding the Fourth Proportional to 286,243.20, 429,364.80 and 220,017.60

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Solution

The fourth proportional to 286,243.20, 429,364.80 and 220,017.60 is: 330,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,243.20 : 429,364.80 = 220,017.60 : x
  2. Step 2: Convert to fraction form
    286,243.20/429,364.80 = 220,017.60/x
  3. Step 3: Cross multiply
    286,243.20x = 429,364.80 × 220,017.60
  4. Step 4: Simplify right side
    286,243.20x = 94,467,812,820.48
  5. Step 5: Solve for x
    x = 94,467,812,820.48/286,243.20
  6. Step 6: Final answer
    x = 330,026.40

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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.