Home / 384,981.36-531,290.76-215,215.44

Finding the Fourth Proportional to 384,981.36, 531,290.76 and 215,215.44

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Solution

The fourth proportional to 384,981.36, 531,290.76 and 215,215.44 is: 297,006.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,981.36 : 531,290.76 = 215,215.44 : x
  2. Step 2: Convert to fraction form
    384,981.36/531,290.76 = 215,215.44/x
  3. Step 3: Cross multiply
    384,981.36x = 531,290.76 × 215,215.44
  4. Step 4: Simplify right side
    384,981.36x = 114,341,974,681.33
  5. Step 5: Solve for x
    x = 114,341,974,681.33/384,981.36
  6. Step 6: Final answer
    x = 297,006.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.