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Finding the Fourth Proportional to 386,391, 533,038.14 and 273,276.12

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Solution

The fourth proportional to 386,391, 533,038.14 and 273,276.12 is: 376,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,391 : 533,038.14 = 273,276.12 : x
  2. Step 2: Convert to fraction form
    386,391/533,038.14 = 273,276.12/x
  3. Step 3: Cross multiply
    386,391x = 533,038.14 × 273,276.12
  4. Step 4: Simplify right side
    386,391x = 145,666,594,711.22
  5. Step 5: Solve for x
    x = 145,666,594,711.22/386,391
  6. Step 6: Final answer
    x = 376,992.72

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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.