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Finding the Fourth Proportional to 313,953.76, 471,050.16 and 145,555.36

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Solution

The fourth proportional to 313,953.76, 471,050.16 and 145,555.36 is: 218,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,953.76 : 471,050.16 = 145,555.36 : x
  2. Step 2: Convert to fraction form
    313,953.76/471,050.16 = 145,555.36/x
  3. Step 3: Cross multiply
    313,953.76x = 471,050.16 × 145,555.36
  4. Step 4: Simplify right side
    313,953.76x = 68,563,875,616.86
  5. Step 5: Solve for x
    x = 68,563,875,616.86/313,953.76
  6. Step 6: Final answer
    x = 218,388.45

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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.