Home / 345,747.32-477,162.80-209,815.86

Finding the Fourth Proportional to 345,747.32, 477,162.80 and 209,815.86

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Solution

The fourth proportional to 345,747.32, 477,162.80 and 209,815.86 is: 289,565.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,747.32 : 477,162.80 = 209,815.86 : x
  2. Step 2: Convert to fraction form
    345,747.32/477,162.80 = 209,815.86/x
  3. Step 3: Cross multiply
    345,747.32x = 477,162.80 × 209,815.86
  4. Step 4: Simplify right side
    345,747.32x = 100,116,323,242.01
  5. Step 5: Solve for x
    x = 100,116,323,242.01/345,747.32
  6. Step 6: Final answer
    x = 289,565.00

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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.