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Finding the Fourth Proportional to 368,309.16, 507,920.22 and 340,818.84

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Solution

The fourth proportional to 368,309.16, 507,920.22 and 340,818.84 is: 470,009.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,309.16 : 507,920.22 = 340,818.84 : x
  2. Step 2: Convert to fraction form
    368,309.16/507,920.22 = 340,818.84/x
  3. Step 3: Cross multiply
    368,309.16x = 507,920.22 × 340,818.84
  4. Step 4: Simplify right side
    368,309.16x = 173,108,780,192.95
  5. Step 5: Solve for x
    x = 173,108,780,192.95/368,309.16
  6. Step 6: Final answer
    x = 470,009.43

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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.