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Finding the Fourth Proportional to 208,535.79, 287,776.32 and 117,888.72

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Solution

The fourth proportional to 208,535.79, 287,776.32 and 117,888.72 is: 162,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,535.79 : 287,776.32 = 117,888.72 : x
  2. Step 2: Convert to fraction form
    208,535.79/287,776.32 = 117,888.72/x
  3. Step 3: Cross multiply
    208,535.79x = 287,776.32 × 117,888.72
  4. Step 4: Simplify right side
    208,535.79x = 33,925,582,011.11
  5. Step 5: Solve for x
    x = 33,925,582,011.11/208,535.79
  6. Step 6: Final answer
    x = 162,684.70

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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.