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Finding the Fourth Proportional to 286,707.18, 395,666.04 and 157,655.46

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Solution

The fourth proportional to 286,707.18, 395,666.04 and 157,655.46 is: 217,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,707.18 : 395,666.04 = 157,655.46 : x
  2. Step 2: Convert to fraction form
    286,707.18/395,666.04 = 157,655.46/x
  3. Step 3: Cross multiply
    286,707.18x = 395,666.04 × 157,655.46
  4. Step 4: Simplify right side
    286,707.18x = 62,378,911,542.58
  5. Step 5: Solve for x
    x = 62,378,911,542.58/286,707.18
  6. Step 6: Final answer
    x = 217,570.11

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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.