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Finding the Fourth Proportional to 163,911.60, 245,543.40 and 144,428.40

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Solution

The fourth proportional to 163,911.60, 245,543.40 and 144,428.40 is: 216,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,911.60 : 245,543.40 = 144,428.40 : x
  2. Step 2: Convert to fraction form
    163,911.60/245,543.40 = 144,428.40/x
  3. Step 3: Cross multiply
    163,911.60x = 245,543.40 × 144,428.40
  4. Step 4: Simplify right side
    163,911.60x = 35,463,440,392.56
  5. Step 5: Solve for x
    x = 35,463,440,392.56/163,911.60
  6. Step 6: Final answer
    x = 216,357.11

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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.