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Finding the Fourth Proportional to 525,692.58, 725,697.95 and 307,870.95

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Solution

The fourth proportional to 525,692.58, 725,697.95 and 307,870.95 is: 425,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,692.58 : 725,697.95 = 307,870.95 : x
  2. Step 2: Convert to fraction form
    525,692.58/725,697.95 = 307,870.95/x
  3. Step 3: Cross multiply
    525,692.58x = 725,697.95 × 307,870.95
  4. Step 4: Simplify right side
    525,692.58x = 223,421,315,740.20
  5. Step 5: Solve for x
    x = 223,421,315,740.20/525,692.58
  6. Step 6: Final answer
    x = 425,003.75

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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.