Finding the Fourth Proportional to 389,168,681.16, 537,052,762.97 and 212,956,691.07
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Solution
The fourth proportional to 389,168,681.16, 537,052,762.97 and 212,956,691.07 is: 293,880,224.36
Step by Step Solution
- Step 1: Write the proportion equation
389,168,681.16 : 537,052,762.97 = 212,956,691.07 : x - Step 2: Convert to fraction form
389,168,681.16/537,052,762.97 = 212,956,691.07/x - Step 3: Cross multiply
389,168,681.16x = 537,052,762.97 × 212,956,691.07 - Step 4: Simplify right side
389,168,681.16x = 114,368,979,332,092,224 - Step 5: Solve for x
x = 114,368,979,332,092,224/389,168,681.16 - Step 6: Final answer
x = 293,880,224.36
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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.