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Finding the Fourth Proportional to 248,870.30, 373,305.45 and 209,990.30

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Solution

The fourth proportional to 248,870.30, 373,305.45 and 209,990.30 is: 314,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,870.30 : 373,305.45 = 209,990.30 : x
  2. Step 2: Convert to fraction form
    248,870.30/373,305.45 = 209,990.30/x
  3. Step 3: Cross multiply
    248,870.30x = 373,305.45 × 209,990.30
  4. Step 4: Simplify right side
    248,870.30x = 78,390,523,437.14
  5. Step 5: Solve for x
    x = 78,390,523,437.14/248,870.30
  6. Step 6: Final answer
    x = 314,985.45

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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.