Home / 421,515,156.27-581,697,802.24-230,772,991.31

Finding the Fourth Proportional to 421,515,156.27, 581,697,802.24 and 230,772,991.31

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Solution

The fourth proportional to 421,515,156.27, 581,697,802.24 and 230,772,991.31 is: 318,470,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,515,156.27 : 581,697,802.24 = 230,772,991.31 : x
  2. Step 2: Convert to fraction form
    421,515,156.27/581,697,802.24 = 230,772,991.31/x
  3. Step 3: Cross multiply
    421,515,156.27x = 581,697,802.24 × 230,772,991.31
  4. Step 4: Simplify right side
    421,515,156.27x = 134,240,141,857,892,192
  5. Step 5: Solve for x
    x = 134,240,141,857,892,192/421,515,156.27
  6. Step 6: Final answer
    x = 318,470,498.30

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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.