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Finding the Fourth Proportional to 620,220, 930,338.64 and 176,988

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Solution

The fourth proportional to 620,220, 930,338.64 and 176,988 is: 265,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,220 : 930,338.64 = 176,988 : x
  2. Step 2: Convert to fraction form
    620,220/930,338.64 = 176,988/x
  3. Step 3: Cross multiply
    620,220x = 930,338.64 × 176,988
  4. Step 4: Simplify right side
    620,220x = 164,658,775,216.32
  5. Step 5: Solve for x
    x = 164,658,775,216.32/620,220
  6. Step 6: Final answer
    x = 265,484.47

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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.