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Finding the Fourth Proportional to 472,428.36, 651,942.36 and 257,570.28

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Solution

The fourth proportional to 472,428.36, 651,942.36 and 257,570.28 is: 355,442.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,428.36 : 651,942.36 = 257,570.28 : x
  2. Step 2: Convert to fraction form
    472,428.36/651,942.36 = 257,570.28/x
  3. Step 3: Cross multiply
    472,428.36x = 651,942.36 × 257,570.28
  4. Step 4: Simplify right side
    472,428.36x = 167,920,976,209.06
  5. Step 5: Solve for x
    x = 167,920,976,209.06/472,428.36
  6. Step 6: Final answer
    x = 355,442.20

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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.