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Finding the Fourth Proportional to 346,652.40, 520,075.80 and 147,068.40

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Solution

The fourth proportional to 346,652.40, 520,075.80 and 147,068.40 is: 220,643.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,652.40 : 520,075.80 = 147,068.40 : x
  2. Step 2: Convert to fraction form
    346,652.40/520,075.80 = 147,068.40/x
  3. Step 3: Cross multiply
    346,652.40x = 520,075.80 × 147,068.40
  4. Step 4: Simplify right side
    346,652.40x = 76,486,715,784.72
  5. Step 5: Solve for x
    x = 76,486,715,784.72/346,652.40
  6. Step 6: Final answer
    x = 220,643.84

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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.