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Finding the Fourth Proportional to 229,543.70, 344,315.55 and 139,730.90

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Solution

The fourth proportional to 229,543.70, 344,315.55 and 139,730.90 is: 209,596.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,543.70 : 344,315.55 = 139,730.90 : x
  2. Step 2: Convert to fraction form
    229,543.70/344,315.55 = 139,730.90/x
  3. Step 3: Cross multiply
    229,543.70x = 344,315.55 × 139,730.90
  4. Step 4: Simplify right side
    229,543.70x = 48,111,521,685.50
  5. Step 5: Solve for x
    x = 48,111,521,685.50/229,543.70
  6. Step 6: Final answer
    x = 209,596.35

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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.