Home / 305,700.21-458,123.18-260,485.47

Finding the Fourth Proportional to 305,700.21, 458,123.18 and 260,485.47

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Solution

The fourth proportional to 305,700.21, 458,123.18 and 260,485.47 is: 390,364.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,700.21 : 458,123.18 = 260,485.47 : x
  2. Step 2: Convert to fraction form
    305,700.21/458,123.18 = 260,485.47/x
  3. Step 3: Cross multiply
    305,700.21x = 458,123.18 × 260,485.47
  4. Step 4: Simplify right side
    305,700.21x = 119,334,430,557.77
  5. Step 5: Solve for x
    x = 119,334,430,557.77/305,700.21
  6. Step 6: Final answer
    x = 390,364.24

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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.