Home / 245,985.83-339,461.63-138,557.55

Finding the Fourth Proportional to 245,985.83, 339,461.63 and 138,557.55

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Solution

The fourth proportional to 245,985.83, 339,461.63 and 138,557.55 is: 191,210.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,985.83 : 339,461.63 = 138,557.55 : x
  2. Step 2: Convert to fraction form
    245,985.83/339,461.63 = 138,557.55/x
  3. Step 3: Cross multiply
    245,985.83x = 339,461.63 × 138,557.55
  4. Step 4: Simplify right side
    245,985.83x = 47,034,973,650.98
  5. Step 5: Solve for x
    x = 47,034,973,650.98/245,985.83
  6. Step 6: Final answer
    x = 191,210.09

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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.