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Finding the Fourth Proportional to 388,776.69, 536,446.81 and 216,656.93

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Solution

The fourth proportional to 388,776.69, 536,446.81 and 216,656.93 is: 298,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,776.69 : 536,446.81 = 216,656.93 : x
  2. Step 2: Convert to fraction form
    388,776.69/536,446.81 = 216,656.93/x
  3. Step 3: Cross multiply
    388,776.69x = 536,446.81 × 216,656.93
  4. Step 4: Simplify right side
    388,776.69x = 116,224,918,962.89
  5. Step 5: Solve for x
    x = 116,224,918,962.89/388,776.69
  6. Step 6: Final answer
    x = 298,950.33

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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.