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Finding the Fourth Proportional to 286,539.40, 429,809.10 and 89,547.40

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Solution

The fourth proportional to 286,539.40, 429,809.10 and 89,547.40 is: 134,321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,539.40 : 429,809.10 = 89,547.40 : x
  2. Step 2: Convert to fraction form
    286,539.40/429,809.10 = 89,547.40/x
  3. Step 3: Cross multiply
    286,539.40x = 429,809.10 × 89,547.40
  4. Step 4: Simplify right side
    286,539.40x = 38,488,287,401.34
  5. Step 5: Solve for x
    x = 38,488,287,401.34/286,539.40
  6. Step 6: Final answer
    x = 134,321.10

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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.