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Finding the Fourth Proportional to 314,070.80, 470,960.40 and 136,486.40

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Solution

The fourth proportional to 314,070.80, 470,960.40 and 136,486.40 is: 204,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,070.80 : 470,960.40 = 136,486.40 : x
  2. Step 2: Convert to fraction form
    314,070.80/470,960.40 = 136,486.40/x
  3. Step 3: Cross multiply
    314,070.80x = 470,960.40 × 136,486.40
  4. Step 4: Simplify right side
    314,070.80x = 64,279,689,538.56
  5. Step 5: Solve for x
    x = 64,279,689,538.56/314,070.80
  6. Step 6: Final answer
    x = 204,666.24

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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.