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Finding the Fourth Proportional to 449,448.66, 620,271.81 and 258,521.94

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Solution

The fourth proportional to 449,448.66, 620,271.81 and 258,521.94 is: 356,779.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,448.66 : 620,271.81 = 258,521.94 : x
  2. Step 2: Convert to fraction form
    449,448.66/620,271.81 = 258,521.94/x
  3. Step 3: Cross multiply
    449,448.66x = 620,271.81 × 258,521.94
  4. Step 4: Simplify right side
    449,448.66x = 160,353,871,648.51
  5. Step 5: Solve for x
    x = 160,353,871,648.51/449,448.66
  6. Step 6: Final answer
    x = 356,779.06

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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.