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Finding the Fourth Proportional to 279,031.60, 418,547.40 and 89,491.60

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Solution

The fourth proportional to 279,031.60, 418,547.40 and 89,491.60 is: 134,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,031.60 : 418,547.40 = 89,491.60 : x
  2. Step 2: Convert to fraction form
    279,031.60/418,547.40 = 89,491.60/x
  3. Step 3: Cross multiply
    279,031.60x = 418,547.40 × 89,491.60
  4. Step 4: Simplify right side
    279,031.60x = 37,456,476,501.84
  5. Step 5: Solve for x
    x = 37,456,476,501.84/279,031.60
  6. Step 6: Final answer
    x = 134,237.40

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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.