Finding the Fourth Proportional to 371,928,050.24, 513,968,579.12 and 278,947,132.88
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Solution
The fourth proportional to 371,928,050.24, 513,968,579.12 and 278,947,132.88 is: 385,477,947.80
Step by Step Solution
- Step 1: Write the proportion equation
371,928,050.24 : 513,968,579.12 = 278,947,132.88 : x - Step 2: Convert to fraction form
371,928,050.24/513,968,579.12 = 278,947,132.88/x - Step 3: Cross multiply
371,928,050.24x = 513,968,579.12 × 278,947,132.88 - Step 4: Simplify right side
371,928,050.24x = 143,370,061,535,931,440 - Step 5: Solve for x
x = 143,370,061,535,931,440/371,928,050.24 - Step 6: Final answer
x = 385,477,947.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.