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Finding the Fourth Proportional to 208,088.10, 312,132.15 and 170,690.40

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Solution

The fourth proportional to 208,088.10, 312,132.15 and 170,690.40 is: 256,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,088.10 : 312,132.15 = 170,690.40 : x
  2. Step 2: Convert to fraction form
    208,088.10/312,132.15 = 170,690.40/x
  3. Step 3: Cross multiply
    208,088.10x = 312,132.15 × 170,690.40
  4. Step 4: Simplify right side
    208,088.10x = 53,277,961,536.36
  5. Step 5: Solve for x
    x = 53,277,961,536.36/208,088.10
  6. Step 6: Final answer
    x = 256,035.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.