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Finding the Fourth Proportional to 388,698,637.96, 583,049,060.34 and 112,372,344.64

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Solution

The fourth proportional to 388,698,637.96, 583,049,060.34 and 112,372,344.64 is: 168,558,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,698,637.96 : 583,049,060.34 = 112,372,344.64 : x
  2. Step 2: Convert to fraction form
    388,698,637.96/583,049,060.34 = 112,372,344.64/x
  3. Step 3: Cross multiply
    388,698,637.96x = 583,049,060.34 × 112,372,344.64
  4. Step 4: Simplify right side
    388,698,637.96x = 65,518,589,950,554,640
  5. Step 5: Solve for x
    x = 65,518,589,950,554,640/388,698,637.96
  6. Step 6: Final answer
    x = 168,558,835.95

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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.