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Finding the Fourth Proportional to 373,354.20, 561,413.70 and 312,528.60

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Solution

The fourth proportional to 373,354.20, 561,413.70 and 312,528.60 is: 469,950.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,354.20 : 561,413.70 = 312,528.60 : x
  2. Step 2: Convert to fraction form
    373,354.20/561,413.70 = 312,528.60/x
  3. Step 3: Cross multiply
    373,354.20x = 561,413.70 × 312,528.60
  4. Step 4: Simplify right side
    373,354.20x = 175,457,837,681.82
  5. Step 5: Solve for x
    x = 175,457,837,681.82/373,354.20
  6. Step 6: Final answer
    x = 469,950.08

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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.