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Finding the Fourth Proportional to 316,809, 437,088.78 and 180,745.20

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Solution

The fourth proportional to 316,809, 437,088.78 and 180,745.20 is: 249,366.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,809 : 437,088.78 = 180,745.20 : x
  2. Step 2: Convert to fraction form
    316,809/437,088.78 = 180,745.20/x
  3. Step 3: Cross multiply
    316,809x = 437,088.78 × 180,745.20
  4. Step 4: Simplify right side
    316,809x = 79,001,698,958.86
  5. Step 5: Solve for x
    x = 79,001,698,958.86/316,809
  6. Step 6: Final answer
    x = 249,366.97

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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.