Home / 440,130,137.40-660,195,206.10-287,075,129.40

Finding the Fourth Proportional to 440,130,137.40, 660,195,206.10 and 287,075,129.40

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Solution

The fourth proportional to 440,130,137.40, 660,195,206.10 and 287,075,129.40 is: 430,612,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,130,137.40 : 660,195,206.10 = 287,075,129.40 : x
  2. Step 2: Convert to fraction form
    440,130,137.40/660,195,206.10 = 287,075,129.40/x
  3. Step 3: Cross multiply
    440,130,137.40x = 660,195,206.10 × 287,075,129.40
  4. Step 4: Simplify right side
    440,130,137.40x = 189,525,624,220,417,152
  5. Step 5: Solve for x
    x = 189,525,624,220,417,152/440,130,137.40
  6. Step 6: Final answer
    x = 430,612,694.10

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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.