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Finding the Fourth Proportional to 199,358.40, 279,931.20 and 199,358.40

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Solution

The fourth proportional to 199,358.40, 279,931.20 and 199,358.40 is: 279,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,358.40 : 279,931.20 = 199,358.40 : x
  2. Step 2: Convert to fraction form
    199,358.40/279,931.20 = 199,358.40/x
  3. Step 3: Cross multiply
    199,358.40x = 279,931.20 × 199,358.40
  4. Step 4: Simplify right side
    199,358.40x = 55,806,636,142.08
  5. Step 5: Solve for x
    x = 55,806,636,142.08/199,358.40
  6. Step 6: Final answer
    x = 279,931.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.