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Finding the Fourth Proportional to 553,690.80, 831,457.80 and 304,551.60

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Solution

The fourth proportional to 553,690.80, 831,457.80 and 304,551.60 is: 457,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,690.80 : 831,457.80 = 304,551.60 : x
  2. Step 2: Convert to fraction form
    553,690.80/831,457.80 = 304,551.60/x
  3. Step 3: Cross multiply
    553,690.80x = 831,457.80 × 304,551.60
  4. Step 4: Simplify right side
    553,690.80x = 253,221,803,322.48
  5. Step 5: Solve for x
    x = 253,221,803,322.48/553,690.80
  6. Step 6: Final answer
    x = 457,334.32

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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.