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Finding the Fourth Proportional to 528,376.36, 729,159.26 and 302,026.72

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Solution

The fourth proportional to 528,376.36, 729,159.26 and 302,026.72 is: 416,796.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,376.36 : 729,159.26 = 302,026.72 : x
  2. Step 2: Convert to fraction form
    528,376.36/729,159.26 = 302,026.72/x
  3. Step 3: Cross multiply
    528,376.36x = 729,159.26 × 302,026.72
  4. Step 4: Simplify right side
    528,376.36x = 220,225,579,655.43
  5. Step 5: Solve for x
    x = 220,225,579,655.43/528,376.36
  6. Step 6: Final answer
    x = 416,796.81

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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.