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Finding the Fourth Proportional to 228,637.80, 342,956.70 and 134,159.40

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Solution

The fourth proportional to 228,637.80, 342,956.70 and 134,159.40 is: 201,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,637.80 : 342,956.70 = 134,159.40 : x
  2. Step 2: Convert to fraction form
    228,637.80/342,956.70 = 134,159.40/x
  3. Step 3: Cross multiply
    228,637.80x = 342,956.70 × 134,159.40
  4. Step 4: Simplify right side
    228,637.80x = 46,010,865,097.98
  5. Step 5: Solve for x
    x = 46,010,865,097.98/228,637.80
  6. Step 6: Final answer
    x = 201,239.10

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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.