Home / 278,333,981.76-384,109,681.32-166,788,058.80

Finding the Fourth Proportional to 278,333,981.76, 384,109,681.32 and 166,788,058.80

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Solution

The fourth proportional to 278,333,981.76, 384,109,681.32 and 166,788,058.80 is: 230,172,786.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,333,981.76 : 384,109,681.32 = 166,788,058.80 : x
  2. Step 2: Convert to fraction form
    278,333,981.76/384,109,681.32 = 166,788,058.80/x
  3. Step 3: Cross multiply
    278,333,981.76x = 384,109,681.32 × 166,788,058.80
  4. Step 4: Simplify right side
    278,333,981.76x = 64,064,908,113,649,424
  5. Step 5: Solve for x
    x = 64,064,908,113,649,424/278,333,981.76
  6. Step 6: Final answer
    x = 230,172,786.34

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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.