Home / 388,871,814.90-536,632,487.72-215,025,614.58

Finding the Fourth Proportional to 388,871,814.90, 536,632,487.72 and 215,025,614.58

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Solution

The fourth proportional to 388,871,814.90, 536,632,487.72 and 215,025,614.58 is: 296,729,477.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,871,814.90 : 536,632,487.72 = 215,025,614.58 : x
  2. Step 2: Convert to fraction form
    388,871,814.90/536,632,487.72 = 215,025,614.58/x
  3. Step 3: Cross multiply
    388,871,814.90x = 536,632,487.72 × 215,025,614.58
  4. Step 4: Simplify right side
    388,871,814.90x = 115,389,730,475,587,312
  5. Step 5: Solve for x
    x = 115,389,730,475,587,312/388,871,814.90
  6. Step 6: Final answer
    x = 296,729,477.57

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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.