Home / 386,307.05-579,627.08-208,938.92

Finding the Fourth Proportional to 386,307.05, 579,627.08 and 208,938.92

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Solution

The fourth proportional to 386,307.05, 579,627.08 and 208,938.92 is: 313,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,307.05 : 579,627.08 = 208,938.92 : x
  2. Step 2: Convert to fraction form
    386,307.05/579,627.08 = 208,938.92/x
  3. Step 3: Cross multiply
    386,307.05x = 579,627.08 × 208,938.92
  4. Step 4: Simplify right side
    386,307.05x = 121,106,657,285.85
  5. Step 5: Solve for x
    x = 121,106,657,285.85/386,307.05
  6. Step 6: Final answer
    x = 313,498.44

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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.