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Finding the Fourth Proportional to 210,612.04, 315,973.44 and 75,689.74

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Solution

The fourth proportional to 210,612.04, 315,973.44 and 75,689.74 is: 113,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,612.04 : 315,973.44 = 75,689.74 : x
  2. Step 2: Convert to fraction form
    210,612.04/315,973.44 = 75,689.74/x
  3. Step 3: Cross multiply
    210,612.04x = 315,973.44 × 75,689.74
  4. Step 4: Simplify right side
    210,612.04x = 23,915,947,520.51
  5. Step 5: Solve for x
    x = 23,915,947,520.51/210,612.04
  6. Step 6: Final answer
    x = 113,554.51

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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.