Home / 487,819,089.51-731,642,138.25-221,862,506.16

Finding the Fourth Proportional to 487,819,089.51, 731,642,138.25 and 221,862,506.16

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Solution

The fourth proportional to 487,819,089.51, 731,642,138.25 and 221,862,506.16 is: 332,754,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,819,089.51 : 731,642,138.25 = 221,862,506.16 : x
  2. Step 2: Convert to fraction form
    487,819,089.51/731,642,138.25 = 221,862,506.16/x
  3. Step 3: Cross multiply
    487,819,089.51x = 731,642,138.25 × 221,862,506.16
  4. Step 4: Simplify right side
    487,819,089.51x = 162,323,958,405,826,080
  5. Step 5: Solve for x
    x = 162,323,958,405,826,080/487,819,089.51
  6. Step 6: Final answer
    x = 332,754,420.43

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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.