Home / 390,345.45-538,647.05-237,362.52

Finding the Fourth Proportional to 390,345.45, 538,647.05 and 237,362.52

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Solution

The fourth proportional to 390,345.45, 538,647.05 and 237,362.52 is: 327,542.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,345.45 : 538,647.05 = 237,362.52 : x
  2. Step 2: Convert to fraction form
    390,345.45/538,647.05 = 237,362.52/x
  3. Step 3: Cross multiply
    390,345.45x = 538,647.05 × 237,362.52
  4. Step 4: Simplify right side
    390,345.45x = 127,854,621,178.57
  5. Step 5: Solve for x
    x = 127,854,621,178.57/390,345.45
  6. Step 6: Final answer
    x = 327,542.24

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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.