Home / 280,580,148.84-387,214,100.92-155,130,023.46

Finding the Fourth Proportional to 280,580,148.84, 387,214,100.92 and 155,130,023.46

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Solution

The fourth proportional to 280,580,148.84, 387,214,100.92 and 155,130,023.46 is: 214,086,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,580,148.84 : 387,214,100.92 = 155,130,023.46 : x
  2. Step 2: Convert to fraction form
    280,580,148.84/387,214,100.92 = 155,130,023.46/x
  3. Step 3: Cross multiply
    280,580,148.84x = 387,214,100.92 × 155,130,023.46
  4. Step 4: Simplify right side
    280,580,148.84x = 60,068,532,559,762,416
  5. Step 5: Solve for x
    x = 60,068,532,559,762,416/280,580,148.84
  6. Step 6: Final answer
    x = 214,086,893.92

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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.