Home / 289,285,798.65-399,219,661.29-163,864,035.42

Finding the Fourth Proportional to 289,285,798.65, 399,219,661.29 and 163,864,035.42

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Solution

The fourth proportional to 289,285,798.65, 399,219,661.29 and 163,864,035.42 is: 226,135,347.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,285,798.65 : 399,219,661.29 = 163,864,035.42 : x
  2. Step 2: Convert to fraction form
    289,285,798.65/399,219,661.29 = 163,864,035.42/x
  3. Step 3: Cross multiply
    289,285,798.65x = 399,219,661.29 × 163,864,035.42
  4. Step 4: Simplify right side
    289,285,798.65x = 65,417,744,717,984,960
  5. Step 5: Solve for x
    x = 65,417,744,717,984,960/289,285,798.65
  6. Step 6: Final answer
    x = 226,135,347.89

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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.