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Finding the Fourth Proportional to 405,276.67, 607,927.30 and 139,033.35

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Solution

The fourth proportional to 405,276.67, 607,927.30 and 139,033.35 is: 208,554.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,276.67 : 607,927.30 = 139,033.35 : x
  2. Step 2: Convert to fraction form
    405,276.67/607,927.30 = 139,033.35/x
  3. Step 3: Cross multiply
    405,276.67x = 607,927.30 × 139,033.35
  4. Step 4: Simplify right side
    405,276.67x = 84,522,169,075.46
  5. Step 5: Solve for x
    x = 84,522,169,075.46/405,276.67
  6. Step 6: Final answer
    x = 208,554.24

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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.