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Finding the Fourth Proportional to 289,413.10, 433,802.85 and 102,328.30

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Solution

The fourth proportional to 289,413.10, 433,802.85 and 102,328.30 is: 153,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,413.10 : 433,802.85 = 102,328.30 : x
  2. Step 2: Convert to fraction form
    289,413.10/433,802.85 = 102,328.30/x
  3. Step 3: Cross multiply
    289,413.10x = 433,802.85 × 102,328.30
  4. Step 4: Simplify right side
    289,413.10x = 44,390,308,175.66
  5. Step 5: Solve for x
    x = 44,390,308,175.66/289,413.10
  6. Step 6: Final answer
    x = 153,380.44

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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.