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Finding the Fourth Proportional to 210,009.30, 314,812.35 and 69,695.70

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Solution

The fourth proportional to 210,009.30, 314,812.35 and 69,695.70 is: 104,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,009.30 : 314,812.35 = 69,695.70 : x
  2. Step 2: Convert to fraction form
    210,009.30/314,812.35 = 69,695.70/x
  3. Step 3: Cross multiply
    210,009.30x = 314,812.35 × 69,695.70
  4. Step 4: Simplify right side
    210,009.30x = 21,941,067,101.90
  5. Step 5: Solve for x
    x = 21,941,067,101.90/210,009.30
  6. Step 6: Final answer
    x = 104,476.65

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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.