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Finding the Fourth Proportional to 210,275.80, 315,413.70 and 168,803.80

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Solution

The fourth proportional to 210,275.80, 315,413.70 and 168,803.80 is: 253,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,275.80 : 315,413.70 = 168,803.80 : x
  2. Step 2: Convert to fraction form
    210,275.80/315,413.70 = 168,803.80/x
  3. Step 3: Cross multiply
    210,275.80x = 315,413.70 × 168,803.80
  4. Step 4: Simplify right side
    210,275.80x = 53,243,031,132.06
  5. Step 5: Solve for x
    x = 53,243,031,132.06/210,275.80
  6. Step 6: Final answer
    x = 253,205.70

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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.