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Finding the Fourth Proportional to 388,876.77, 536,646.74 and 216,792.68

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Solution

The fourth proportional to 388,876.77, 536,646.74 and 216,792.68 is: 299,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,876.77 : 536,646.74 = 216,792.68 : x
  2. Step 2: Convert to fraction form
    388,876.77/536,646.74 = 216,792.68/x
  3. Step 3: Cross multiply
    388,876.77x = 536,646.74 × 216,792.68
  4. Step 4: Simplify right side
    388,876.77x = 116,341,081,210.67
  5. Step 5: Solve for x
    x = 116,341,081,210.67/388,876.77
  6. Step 6: Final answer
    x = 299,172.10

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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.