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Finding the Fourth Proportional to 286,547.60, 429,821.40 and 185,508.20

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Solution

The fourth proportional to 286,547.60, 429,821.40 and 185,508.20 is: 278,262.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,547.60 : 429,821.40 = 185,508.20 : x
  2. Step 2: Convert to fraction form
    286,547.60/429,821.40 = 185,508.20/x
  3. Step 3: Cross multiply
    286,547.60x = 429,821.40 × 185,508.20
  4. Step 4: Simplify right side
    286,547.60x = 79,735,394,235.48
  5. Step 5: Solve for x
    x = 79,735,394,235.48/286,547.60
  6. Step 6: Final answer
    x = 278,262.30

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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.