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Finding the Fourth Proportional to 557,187.36, 768,897 and 302,532.72

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Solution

The fourth proportional to 557,187.36, 768,897 and 302,532.72 is: 417,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,187.36 : 768,897 = 302,532.72 : x
  2. Step 2: Convert to fraction form
    557,187.36/768,897 = 302,532.72/x
  3. Step 3: Cross multiply
    557,187.36x = 768,897 × 302,532.72
  4. Step 4: Simplify right side
    557,187.36x = 232,616,500,809.84
  5. Step 5: Solve for x
    x = 232,616,500,809.84/557,187.36
  6. Step 6: Final answer
    x = 417,483.45

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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.