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Finding the Fourth Proportional to 210,487.02, 315,510.02 and 98,074.56

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Solution

The fourth proportional to 210,487.02, 315,510.02 and 98,074.56 is: 147,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,487.02 : 315,510.02 = 98,074.56 : x
  2. Step 2: Convert to fraction form
    210,487.02/315,510.02 = 98,074.56/x
  3. Step 3: Cross multiply
    210,487.02x = 315,510.02 × 98,074.56
  4. Step 4: Simplify right side
    210,487.02x = 30,943,506,387.09
  5. Step 5: Solve for x
    x = 30,943,506,387.09/210,487.02
  6. Step 6: Final answer
    x = 147,009.10

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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.