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Finding the Fourth Proportional to 248,303.78, 342,666.99 and 140,878.34

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Solution

The fourth proportional to 248,303.78, 342,666.99 and 140,878.34 is: 194,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,303.78 : 342,666.99 = 140,878.34 : x
  2. Step 2: Convert to fraction form
    248,303.78/342,666.99 = 140,878.34/x
  3. Step 3: Cross multiply
    248,303.78x = 342,666.99 × 140,878.34
  4. Step 4: Simplify right side
    248,303.78x = 48,274,356,724.00
  5. Step 5: Solve for x
    x = 48,274,356,724.00/248,303.78
  6. Step 6: Final answer
    x = 194,416.52

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1.5x scale

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.