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Finding the Fourth Proportional to 375,810.40, 562,403.40 and 257,712.40

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Solution

The fourth proportional to 375,810.40, 562,403.40 and 257,712.40 is: 385,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,810.40 : 562,403.40 = 257,712.40 : x
  2. Step 2: Convert to fraction form
    375,810.40/562,403.40 = 257,712.40/x
  3. Step 3: Cross multiply
    375,810.40x = 562,403.40 × 257,712.40
  4. Step 4: Simplify right side
    375,810.40x = 144,938,329,982.16
  5. Step 5: Solve for x
    x = 144,938,329,982.16/375,810.40
  6. Step 6: Final answer
    x = 385,668.76

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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.