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Finding the Fourth Proportional to 356,835, 492,432.30 and 197,859

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Solution

The fourth proportional to 356,835, 492,432.30 and 197,859 is: 273,045.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,835 : 492,432.30 = 197,859 : x
  2. Step 2: Convert to fraction form
    356,835/492,432.30 = 197,859/x
  3. Step 3: Cross multiply
    356,835x = 492,432.30 × 197,859
  4. Step 4: Simplify right side
    356,835x = 97,432,162,445.70
  5. Step 5: Solve for x
    x = 97,432,162,445.70/356,835
  6. Step 6: Final answer
    x = 273,045.42

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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.