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Finding the Fourth Proportional to 472,148.28, 651,555.72 and 257,289.84

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Solution

The fourth proportional to 472,148.28, 651,555.72 and 257,289.84 is: 355,055.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,148.28 : 651,555.72 = 257,289.84 : x
  2. Step 2: Convert to fraction form
    472,148.28/651,555.72 = 257,289.84/x
  3. Step 3: Cross multiply
    472,148.28x = 651,555.72 × 257,289.84
  4. Step 4: Simplify right side
    472,148.28x = 167,638,666,949.89
  5. Step 5: Solve for x
    x = 167,638,666,949.89/472,148.28
  6. Step 6: Final answer
    x = 355,055.13

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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.