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Finding the Fourth Proportional to 245,707.47, 368,543.42 and 77,275.98

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Solution

The fourth proportional to 245,707.47, 368,543.42 and 77,275.98 is: 115,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,707.47 : 368,543.42 = 77,275.98 : x
  2. Step 2: Convert to fraction form
    245,707.47/368,543.42 = 77,275.98/x
  3. Step 3: Cross multiply
    245,707.47x = 368,543.42 × 77,275.98
  4. Step 4: Simplify right side
    245,707.47x = 28,479,553,953.05
  5. Step 5: Solve for x
    x = 28,479,553,953.05/245,707.47
  6. Step 6: Final answer
    x = 115,908.38

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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.