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Finding the Fourth Proportional to 219,700.60, 328,894.80 and 130,908.40

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Solution

The fourth proportional to 219,700.60, 328,894.80 and 130,908.40 is: 195,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,700.60 : 328,894.80 = 130,908.40 : x
  2. Step 2: Convert to fraction form
    219,700.60/328,894.80 = 130,908.40/x
  3. Step 3: Cross multiply
    219,700.60x = 328,894.80 × 130,908.40
  4. Step 4: Simplify right side
    219,700.60x = 43,055,092,036.32
  5. Step 5: Solve for x
    x = 43,055,092,036.32/219,700.60
  6. Step 6: Final answer
    x = 195,971.66

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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.