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Finding the Fourth Proportional to 640,290.80, 959,768.76 and 240,656.24

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Solution

The fourth proportional to 640,290.80, 959,768.76 and 240,656.24 is: 360,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,290.80 : 959,768.76 = 240,656.24 : x
  2. Step 2: Convert to fraction form
    640,290.80/959,768.76 = 240,656.24/x
  3. Step 3: Cross multiply
    640,290.80x = 959,768.76 × 240,656.24
  4. Step 4: Simplify right side
    640,290.80x = 230,974,341,051.06
  5. Step 5: Solve for x
    x = 230,974,341,051.06/640,290.80
  6. Step 6: Final answer
    x = 360,733.50

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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.