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Finding the Fourth Proportional to 370,495.47, 511,001.64 and 318,900.38

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Solution

The fourth proportional to 370,495.47, 511,001.64 and 318,900.38 is: 439,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,495.47 : 511,001.64 = 318,900.38 : x
  2. Step 2: Convert to fraction form
    370,495.47/511,001.64 = 318,900.38/x
  3. Step 3: Cross multiply
    370,495.47x = 511,001.64 × 318,900.38
  4. Step 4: Simplify right side
    370,495.47x = 162,958,617,225.86
  5. Step 5: Solve for x
    x = 162,958,617,225.86/370,495.47
  6. Step 6: Final answer
    x = 439,839.70

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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.