Home / 438,308.09-657,499.52-153,973.79

Finding the Fourth Proportional to 438,308.09, 657,499.52 and 153,973.79

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Solution

The fourth proportional to 438,308.09, 657,499.52 and 153,973.79 is: 230,973.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,308.09 : 657,499.52 = 153,973.79 : x
  2. Step 2: Convert to fraction form
    438,308.09/657,499.52 = 153,973.79/x
  3. Step 3: Cross multiply
    438,308.09x = 657,499.52 × 153,973.79
  4. Step 4: Simplify right side
    438,308.09x = 101,237,689,730.08
  5. Step 5: Solve for x
    x = 101,237,689,730.08/438,308.09
  6. Step 6: Final answer
    x = 230,973.81

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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.