Home / 430,444.40-645,075.95-272,389.91

Finding the Fourth Proportional to 430,444.40, 645,075.95 and 272,389.91

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Solution

The fourth proportional to 430,444.40, 645,075.95 and 272,389.91 is: 408,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,444.40 : 645,075.95 = 272,389.91 : x
  2. Step 2: Convert to fraction form
    430,444.40/645,075.95 = 272,389.91/x
  3. Step 3: Cross multiply
    430,444.40x = 645,075.95 × 272,389.91
  4. Step 4: Simplify right side
    430,444.40x = 175,712,175,376.34
  5. Step 5: Solve for x
    x = 175,712,175,376.34/430,444.40
  6. Step 6: Final answer
    x = 408,211.09

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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.