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Finding the Fourth Proportional to 346,678.80, 520,066.80 and 136,267.80

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Solution

The fourth proportional to 346,678.80, 520,066.80 and 136,267.80 is: 204,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,678.80 : 520,066.80 = 136,267.80 : x
  2. Step 2: Convert to fraction form
    346,678.80/520,066.80 = 136,267.80/x
  3. Step 3: Cross multiply
    346,678.80x = 520,066.80 × 136,267.80
  4. Step 4: Simplify right side
    346,678.80x = 70,868,358,689.04
  5. Step 5: Solve for x
    x = 70,868,358,689.04/346,678.80
  6. Step 6: Final answer
    x = 204,420.80

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1.5x scale

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.