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Finding the Fourth Proportional to 370,308.04, 510,642.90 and 316,770.28

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Solution

The fourth proportional to 370,308.04, 510,642.90 and 316,770.28 is: 436,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,308.04 : 510,642.90 = 316,770.28 : x
  2. Step 2: Convert to fraction form
    370,308.04/510,642.90 = 316,770.28/x
  3. Step 3: Cross multiply
    370,308.04x = 510,642.90 × 316,770.28
  4. Step 4: Simplify right side
    370,308.04x = 161,756,494,413.01
  5. Step 5: Solve for x
    x = 161,756,494,413.01/370,308.04
  6. Step 6: Final answer
    x = 436,816.05

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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.