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Finding the Fourth Proportional to 315,308.36, 435,139.73 and 177,534.74

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Solution

The fourth proportional to 315,308.36, 435,139.73 and 177,534.74 is: 245,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,308.36 : 435,139.73 = 177,534.74 : x
  2. Step 2: Convert to fraction form
    315,308.36/435,139.73 = 177,534.74/x
  3. Step 3: Cross multiply
    315,308.36x = 435,139.73 × 177,534.74
  4. Step 4: Simplify right side
    315,308.36x = 77,252,418,829.22
  5. Step 5: Solve for x
    x = 77,252,418,829.22/315,308.36
  6. Step 6: Final answer
    x = 245,005.93

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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.