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Finding the Fourth Proportional to 262,307.16, 393,478.10 and 75,320.28

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Solution

The fourth proportional to 262,307.16, 393,478.10 and 75,320.28 is: 112,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,307.16 : 393,478.10 = 75,320.28 : x
  2. Step 2: Convert to fraction form
    262,307.16/393,478.10 = 75,320.28/x
  3. Step 3: Cross multiply
    262,307.16x = 393,478.10 × 75,320.28
  4. Step 4: Simplify right side
    262,307.16x = 29,636,880,665.87
  5. Step 5: Solve for x
    x = 29,636,880,665.87/262,307.16
  6. Step 6: Final answer
    x = 112,985.40

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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.