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Finding the Fourth Proportional to 247,271.49, 370,886.70 and 78,785.01

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Solution

The fourth proportional to 247,271.49, 370,886.70 and 78,785.01 is: 118,170.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,271.49 : 370,886.70 = 78,785.01 : x
  2. Step 2: Convert to fraction form
    247,271.49/370,886.70 = 78,785.01/x
  3. Step 3: Cross multiply
    247,271.49x = 370,886.70 × 78,785.01
  4. Step 4: Simplify right side
    247,271.49x = 29,220,312,368.37
  5. Step 5: Solve for x
    x = 29,220,312,368.37/247,271.49
  6. Step 6: Final answer
    x = 118,170.97

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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.