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Finding the Fourth Proportional to 370,742,692.80, 556,313,104.80 and 155,353,713.60

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Solution

The fourth proportional to 370,742,692.80, 556,313,104.80 and 155,353,713.60 is: 233,113,985.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,742,692.80 : 556,313,104.80 = 155,353,713.60 : x
  2. Step 2: Convert to fraction form
    370,742,692.80/556,313,104.80 = 155,353,713.60/x
  3. Step 3: Cross multiply
    370,742,692.80x = 556,313,104.80 × 155,353,713.60
  4. Step 4: Simplify right side
    370,742,692.80x = 86,425,306,755,025,968
  5. Step 5: Solve for x
    x = 86,425,306,755,025,968/370,742,692.80
  6. Step 6: Final answer
    x = 233,113,985.61

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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.