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Finding the Fourth Proportional to 166,428.40, 249,335.40 and 155,369.20

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Solution

The fourth proportional to 166,428.40, 249,335.40 and 155,369.20 is: 232,767.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,428.40 : 249,335.40 = 155,369.20 : x
  2. Step 2: Convert to fraction form
    166,428.40/249,335.40 = 155,369.20/x
  3. Step 3: Cross multiply
    166,428.40x = 249,335.40 × 155,369.20
  4. Step 4: Simplify right side
    166,428.40x = 38,739,041,629.68
  5. Step 5: Solve for x
    x = 38,739,041,629.68/166,428.40
  6. Step 6: Final answer
    x = 232,767.01

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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.