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Finding the Fourth Proportional to 245,730.30, 368,595.45 and 121,314.30

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Solution

The fourth proportional to 245,730.30, 368,595.45 and 121,314.30 is: 181,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,730.30 : 368,595.45 = 121,314.30 : x
  2. Step 2: Convert to fraction form
    245,730.30/368,595.45 = 121,314.30/x
  3. Step 3: Cross multiply
    245,730.30x = 368,595.45 × 121,314.30
  4. Step 4: Simplify right side
    245,730.30x = 44,715,898,999.94
  5. Step 5: Solve for x
    x = 44,715,898,999.94/245,730.30
  6. Step 6: Final answer
    x = 181,971.45

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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.