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Finding the Fourth Proportional to 208,848.71, 288,210.49 and 113,355.40

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Solution

The fourth proportional to 208,848.71, 288,210.49 and 113,355.40 is: 156,430.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,848.71 : 288,210.49 = 113,355.40 : x
  2. Step 2: Convert to fraction form
    208,848.71/288,210.49 = 113,355.40/x
  3. Step 3: Cross multiply
    208,848.71x = 288,210.49 × 113,355.40
  4. Step 4: Simplify right side
    208,848.71x = 32,670,215,378.15
  5. Step 5: Solve for x
    x = 32,670,215,378.15/208,848.71
  6. Step 6: Final answer
    x = 156,430.06

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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.