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Finding the Fourth Proportional to 279,737.40, 386,038.26 and 152,415.12

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Solution

The fourth proportional to 279,737.40, 386,038.26 and 152,415.12 is: 210,333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,737.40 : 386,038.26 = 152,415.12 : x
  2. Step 2: Convert to fraction form
    279,737.40/386,038.26 = 152,415.12/x
  3. Step 3: Cross multiply
    279,737.40x = 386,038.26 × 152,415.12
  4. Step 4: Simplify right side
    279,737.40x = 58,838,067,722.49
  5. Step 5: Solve for x
    x = 58,838,067,722.49/279,737.40
  6. Step 6: Final answer
    x = 210,333.22

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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.