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Finding the Fourth Proportional to 438,397.09, 604,923.11 and 266,225.51

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Solution

The fourth proportional to 438,397.09, 604,923.11 and 266,225.51 is: 367,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,397.09 : 604,923.11 = 266,225.51 : x
  2. Step 2: Convert to fraction form
    438,397.09/604,923.11 = 266,225.51/x
  3. Step 3: Cross multiply
    438,397.09x = 604,923.11 × 266,225.51
  4. Step 4: Simplify right side
    438,397.09x = 161,045,962,139.41
  5. Step 5: Solve for x
    x = 161,045,962,139.41/438,397.09
  6. Step 6: Final answer
    x = 367,351.81

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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.