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Finding the Fourth Proportional to 216,999.42, 299,410.76 and 130,972.35

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Solution

The fourth proportional to 216,999.42, 299,410.76 and 130,972.35 is: 180,712.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,999.42 : 299,410.76 = 130,972.35 : x
  2. Step 2: Convert to fraction form
    216,999.42/299,410.76 = 130,972.35/x
  3. Step 3: Cross multiply
    216,999.42x = 299,410.76 × 130,972.35
  4. Step 4: Simplify right side
    216,999.42x = 39,214,532,302.71
  5. Step 5: Solve for x
    x = 39,214,532,302.71/216,999.42
  6. Step 6: Final answer
    x = 180,712.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.