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Finding the Fourth Proportional to 388,526.70, 536,158.77 and 216,444.43

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Solution

The fourth proportional to 388,526.70, 536,158.77 and 216,444.43 is: 298,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,526.70 : 536,158.77 = 216,444.43 : x
  2. Step 2: Convert to fraction form
    388,526.70/536,158.77 = 216,444.43/x
  3. Step 3: Cross multiply
    388,526.70x = 536,158.77 × 216,444.43
  4. Step 4: Simplify right side
    388,526.70x = 116,048,578,321.49
  5. Step 5: Solve for x
    x = 116,048,578,321.49/388,526.70
  6. Step 6: Final answer
    x = 298,688.81

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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.