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Finding the Fourth Proportional to 353,423.40, 487,713.12 and 192,274.32

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Solution

The fourth proportional to 353,423.40, 487,713.12 and 192,274.32 is: 265,332.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,423.40 : 487,713.12 = 192,274.32 : x
  2. Step 2: Convert to fraction form
    353,423.40/487,713.12 = 192,274.32/x
  3. Step 3: Cross multiply
    353,423.40x = 487,713.12 × 192,274.32
  4. Step 4: Simplify right side
    353,423.40x = 93,774,708,503.08
  5. Step 5: Solve for x
    x = 93,774,708,503.08/353,423.40
  6. Step 6: Final answer
    x = 265,332.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.