Home / 261,749,348.70-392,624,023.05-221,438,564.70

Finding the Fourth Proportional to 261,749,348.70, 392,624,023.05 and 221,438,564.70

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Solution

The fourth proportional to 261,749,348.70, 392,624,023.05 and 221,438,564.70 is: 332,157,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,749,348.70 : 392,624,023.05 = 221,438,564.70 : x
  2. Step 2: Convert to fraction form
    261,749,348.70/392,624,023.05 = 221,438,564.70/x
  3. Step 3: Cross multiply
    261,749,348.70x = 392,624,023.05 × 221,438,564.70
  4. Step 4: Simplify right side
    261,749,348.70x = 86,942,100,130,931,712
  5. Step 5: Solve for x
    x = 86,942,100,130,931,712/261,749,348.70
  6. Step 6: Final answer
    x = 332,157,847.05

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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.