Home / 425,347,831.80-638,021,747.70-166,477,015.80

Finding the Fourth Proportional to 425,347,831.80, 638,021,747.70 and 166,477,015.80

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Solution

The fourth proportional to 425,347,831.80, 638,021,747.70 and 166,477,015.80 is: 249,715,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,347,831.80 : 638,021,747.70 = 166,477,015.80 : x
  2. Step 2: Convert to fraction form
    425,347,831.80/638,021,747.70 = 166,477,015.80/x
  3. Step 3: Cross multiply
    425,347,831.80x = 638,021,747.70 × 166,477,015.80
  4. Step 4: Simplify right side
    425,347,831.80x = 106,215,956,572,596,528
  5. Step 5: Solve for x
    x = 106,215,956,572,596,528/425,347,831.80
  6. Step 6: Final answer
    x = 249,715,523.70

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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.