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Finding the Fourth Proportional to 388,373.97, 535,037.16 and 370,436.93

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Solution

The fourth proportional to 388,373.97, 535,037.16 and 370,436.93 is: 510,326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,373.97 : 535,037.16 = 370,436.93 : x
  2. Step 2: Convert to fraction form
    388,373.97/535,037.16 = 370,436.93/x
  3. Step 3: Cross multiply
    388,373.97x = 535,037.16 × 370,436.93
  4. Step 4: Simplify right side
    388,373.97x = 198,197,520,311.13
  5. Step 5: Solve for x
    x = 198,197,520,311.13/388,373.97
  6. Step 6: Final answer
    x = 510,326.48

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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.