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Finding the Fourth Proportional to 303,363.70, 455,701.65 and 214,790.20

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Solution

The fourth proportional to 303,363.70, 455,701.65 and 214,790.20 is: 322,649.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,363.70 : 455,701.65 = 214,790.20 : x
  2. Step 2: Convert to fraction form
    303,363.70/455,701.65 = 214,790.20/x
  3. Step 3: Cross multiply
    303,363.70x = 455,701.65 × 214,790.20
  4. Step 4: Simplify right side
    303,363.70x = 97,880,248,543.83
  5. Step 5: Solve for x
    x = 97,880,248,543.83/303,363.70
  6. Step 6: Final answer
    x = 322,649.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.