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Finding the Fourth Proportional to 356,312.64, 534,425.94 and 90,075.50

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Solution

The fourth proportional to 356,312.64, 534,425.94 and 90,075.50 is: 135,102.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,312.64 : 534,425.94 = 90,075.50 : x
  2. Step 2: Convert to fraction form
    356,312.64/534,425.94 = 90,075.50/x
  3. Step 3: Cross multiply
    356,312.64x = 534,425.94 × 90,075.50
  4. Step 4: Simplify right side
    356,312.64x = 48,138,681,086.34
  5. Step 5: Solve for x
    x = 48,138,681,086.34/356,312.64
  6. Step 6: Final answer
    x = 135,102.37

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1.5x scale

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.