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Finding the Fourth Proportional to 472,015.05, 651,378.83 and 257,154.45

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Solution

The fourth proportional to 472,015.05, 651,378.83 and 257,154.45 is: 354,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,015.05 : 651,378.83 = 257,154.45 : x
  2. Step 2: Convert to fraction form
    472,015.05/651,378.83 = 257,154.45/x
  3. Step 3: Cross multiply
    472,015.05x = 651,378.83 × 257,154.45
  4. Step 4: Simplify right side
    472,015.05x = 167,504,963,484.52
  5. Step 5: Solve for x
    x = 167,504,963,484.52/472,015.05
  6. Step 6: Final answer
    x = 354,872.08

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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.